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144,416 articles from PhysOrg

• FRIDAY 13. MARCH, 2009
• 20:30 Potential pathway for drug intervention

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  A newly identified molecular pathway that directs stem cells to produce glial cells yields insights into the neurobiology of Down's syndrome and a number of central nervous system disorders characterized by too many glial cells, according to a recent study by researchers at the Salk Institute for Biological Studies.  

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• 20:30 Quantum dots and nanomaterials: Ingredients for better lighting and more reliable power

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  Imagine flexible lighting devices manufactured by using printing techniques. Imagine solar power sources equally as reliable and as portable as any conventional power source.  

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• 20:30 The Day the Sun Brought Darkness (w/Video)

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  On March 13, 1989 the entire province of Quebec, Canada suffered an electrical power blackout. Hundreds of blackouts occur in some part of North America every year. The Quebec Blackout was different, because this one was caused by a solar storm!  

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• 20:30 The sweet spot? Doctors test targets for Parkinson surgery

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  Doctors may be able to tailor a specialized form of brain surgery to more closely match the needs of Parkinson patients, according to results from the first large-scale effort to compare the two current target areas of deep brain stimulation surgery, or DBS.  

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• 20:30 Web founder fears 'snooping' on the Internet

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  Tim Berners-Lee, one of the founders of the World Wide Web, said Friday that he was concerned about the emergence of user profiling on the Internet and "snooping."  

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• 19:25 Black young adults hospitalized for stroke at much higher rate than whites, Hispanics

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  In Florida, black young adults are hospitalized for stroke at a rate three times higher than their white and Hispanic peers, a new study by University of South Florida researchers reports. The study was presented today at the American Heart Association's Council on Epidemiology and Prevention Annual Conference and appears in the online version of the international journal Neuroepidemiology.  

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• 19:25 New Madrid fault system may be shutting down

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  (PhysOrg.com) -- The New Madrid fault system does not behave as earthquake hazard models assume and may be in the process of shutting down, a new study shows.  

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• 19:25 Picky preschoolers: Young children prefer majority opinion

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  When we are faced with a decision, and we're not sure what to do, usually we'll just go with the majority opinion. When do we begin adopting this strategy of "following the crowd"? In a new report in Psychological Science, a journal of the Association for Psychological Science, psychologists Kathleen H. Corriveau, Maria Fusaro, and Paul L. Harris of Harvard University describe experiments suggesting that this tendency starts very early on, around preschool age.  

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• 19:25 Researchers find that the unexpected is a key to human learning

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  The human brain's sensitivity to unexpected outcomes plays a fundamental role in the ability to adapt and learn new behaviors, according to a new study by a team of psychologists and neuroscientists from the University of Pennsylvania.  

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• 19:25 Scientists discover new platinum catalysts for the dehydrogenation of propane

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  The process to turn propane into industrially necessary propylene has been expensive and environmentally unfriendly. That was until scientists at U.S. Department of Energy's Argonne National Laboratory devised a greener way to take this important step in chemical catalysis.  

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• 18:20 Bioabsorbable stents show promise

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  A study published today online in The Lancet (March 13, 2009) presented two year data for the bioabsorbable everolimus coronary stent. Commenting on the results, interventional cardiology specialist, Professor Franz Eberli from the University Hospital Zurich (Switzerland) and official spokesperson for the European Society of Cardiology, said:  

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• 18:20 Contamination under boats no worse than elsewhere in California bay, study says

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  A yearlong federal study has determined levels of contaminated sediment found under obsolete, rotting government ships anchored in Suisun Bay, in central California, are no higher than those found elsewhere in local waters, according to documents released Thursday.  

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• 18:20 NASA: Good shot at Sunday shuttle launch

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  (AP) -- NASA feels it has a good shot at sending shuttle Discovery to the international space station on Sunday following repairs out at the launch pad.  

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• 18:20 US lawmakers move to ban baby bottle chemical

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  US lawmakers on Friday introduced legislation to ban the toxic chemical Bisphenol-A, suspected of harming human development, from all food and beverage containers.  

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• 17:15 Blood brothers: Spanish newborn helps heal sibling

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  A Spanish boy with a serious form of anemia has recovered after a groundbreaking procedure using blood from the umbilical cord of his genetically-selected brother, authorities said Friday.  

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• 17:15 Europe postpones launch of Herschel, Planck telescopes

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  The launch next month of two large European telescopes designed to probe the formation of galaxies and the "Big Bang" scientists say created the universe has been postponed by several weeks, it was announced here on Friday.  

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• 17:15 Facemasks help prevent adverse cardiovascular effects caused by pollution

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  Diesel exhaust causes arteries to lose their flexibility. Researchers writing in BioMed Central's open access journal Particle and Fibre Toxicology found that exposure to engine pollution resulted in arterial stiffness in a group of healthy volunteers.  

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• 17:15 Fledgling mantle plume may be cause of African volcano's unique lava

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  (PhysOrg.com) -- Nyiragongo, an active African volcano, possesses lava unlike any other in the world, which may point toward its source being a new mantle plume says a University of Rochester geochemist. The lava composition indicates that a mantle plume -an upwelling of intense heat from near the core of the Earth -may be bubbling to life beneath the soil of the Democratic Republic of the Congo. The findings are presented in the current issue of the journal Chemical Geology.  

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• 17:15 Hyperbaric treatment for autism reports significant clinical improvements

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  Hyperbaric treatment for children with autism has reportedly led to improvements in the condition, though previous studies were uncontrolled. Now, a new study published in the open access journal, BMC Pediatrics, is the first controlled trial to report clinical improvements.  

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• 17:15 IBM launches water-management services operation

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  (AP) -- IBM Corp. wants to get really deep into water.  

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• 17:15 New invisibility cloak allows object to 'see' out through the cloak

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  (PhysOrg.com) -- "Many groups have been working devices that make objects invisible," Che Ting Chan tells PhysOrg.com. `Most of these devices, however, encompass the object to be cloaked.` Chan, a scientist at The Hong Kong University of Science and Technology, believes that it is possible to create a cloaking device that would be able to render an object invisible without encompassing it.  

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• 17:15 New research suggests key to happiness is gratitude -- and men may be locked out

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  With Mother's Day, Father's Day and high school and college graduations upcoming, there will be plenty of gift-giving and well wishes. When those start pouring in, let yourself be grateful -it's the best way to achieve happiness according to several new studies conducted by Todd Kashdan, associate professor of psychology at George Mason University.  

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• 17:15 Online doctor ratings have their flaws

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  I recently searched several doctor rating Web sites to see whether other people like my OB-GYN as much as I do.  

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• 17:15 Some fear Navy sonar may harm Fla.'s right whales

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  (AP) -- In the blue-green surf, 11 endangered North Atlantic right whales surface, jump and shoot mist high into the air through their blow holes.  

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• 17:15 To work your brain, work your body

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  The problem: I lost my car keys. What kind of training will make my brain work better?  

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